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Newport Beach, CA Weather on May 15
May 15th in Newport Beach, CA typically brings mild spring weather, with average highs around 66°F and lows near 58°F. Over 55 years of records, the warmest May 15th was in 2014 (75°F average), while the coldest was 1995 (57°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 15th dates historically, with the wettest May 15th recording 0.99" of rain. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
What to Expect on May 15
Planning for May 15th in Newport Beach, CA? Great weather for outdoor activities.
May 15 Weather Records for Newport Beach
- •The all-time record high for May 15th in Newport Beach, CA is 86°F, set in 2014.
- •The coldest May 15th on record dropped to 52°F in 2000.
Frequently Asked Questions
What was the warmest May 15 ever in Newport Beach?
The warmest May 15 in Newport Beach, CA reached 86°F in 2014. That is 20°F above the long-term average high of 66°F.
What was the coldest May 15 ever in Newport Beach?
The coldest May 15 in Newport Beach, CA dropped to 52°F in 2000. That is 6°F below the long-term average low of 58°F.
What is the average temperature on May 15 in Newport Beach?
On May 15, Newport Beach averages a high of 66°F and a low of 58°F based on 55 years of NOAA weather observations from NEWPORT BEACH HARBOR.
How many years of weather data are available for May 15 in Newport Beach?
We have 55 years of weather records for May 15 in Newport Beach, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
May 15 Weather History in Newport Beach
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 65°F | 59°F | 0" | -- |
| 2024 | 64°F | 58°F | 0" | -- |
| 2023 | 63°F | 59°F | 0" | -- |
| 2022 | 69°F | 58°F | 0" | -- |
| 2021 | 66°F | 59°F | 0" | -- |
| 2020 | 72°F | 61°F | 0" | -- |
| 2019 | 65°F | 61°F | 0" | -- |
| 2018 | 65°F | 58°F | 0" | -- |
| 2017 | 61°F | 58°F | 0" | -- |
| 2016 | 68°F | 62°F | 0" | -- |
| 2015 | 63°F | 55°F | 0.99" | -- |
| 2014 | 86°F | 65°F | 0" | -- |
| 2013 | 66°F | 60°F | 0" | -- |
| 2012 | 67°F | 57°F | 0" | -- |
| 2011 | 62°F | 57°F | 0.36" | -- |
| 2010 | 70°F | 58°F | 0" | -- |
| 2009 | 64°F | 59°F | 0" | -- |
| 2008 | 67°F | 59°F | 0" | -- |
| 2007 | 62°F | 57°F | 0" | -- |
| 2006 | 64°F | 60°F | 0" | -- |
| 2005 | 72°F | 60°F | 0" | -- |
| 2004 | 73°F | 61°F | 0" | -- |
| 2003 | 69°F | 57°F | 0" | -- |
| 2002 | 66°F | 59°F | 0" | -- |
| 2001 | 62°F | 59°F | 0" | -- |
| 2000 | 72°F | 52°F | 0" | -- |
| 1999 | 72°F | 55°F | 0" | -- |
| 1998 | 72°F | 57°F | 0" | -- |
| 1997 | 69°F | 63°F | 0" | -- |
| 1996 | 70°F | 64°F | 0" | -- |
| 1995 | 62°F | 52°F | 0.15" | -- |
| 1994 | 63°F | 58°F | 0" | -- |
| 1993 | 68°F | 55°F | 0" | -- |
| 1992 | 66°F | 61°F | 0" | -- |
| 1991 | 63°F | 53°F | 0" | -- |
| 1990 | 64°F | 59°F | 0" | -- |
| 1989 | 62°F | 57°F | 0" | -- |
| 1988 | 63°F | 58°F | 0" | -- |
| 1987 | 65°F | 59°F | 0" | -- |
| 1986 | 66°F | 59°F | 0" | -- |
| 1985 | 65°F | 57°F | 0" | -- |
| 1984 | 67°F | 56°F | 0" | -- |
| 1983 | 68°F | 58°F | 0" | -- |
| 1982 | 66°F | 58°F | 0" | -- |
| 1981 | 66°F | 59°F | 0" | -- |
| 1980 | 66°F | 56°F | 0" | -- |
| 1979 | 64°F | 58°F | 0" | -- |
| 1978 | 69°F | 62°F | 0" | -- |
| 1977 | 65°F | 58°F | 0" | -- |
| 1976 | 66°F | 59°F | 0" | -- |
| 1975 | 63°F | 57°F | 0" | -- |
| 1974 | 66°F | 58°F | 0" | -- |
| 1973 | 64°F | 58°F | 0" | -- |
| 1972 | 66°F | 54°F | 0" | -- |
| 1971 | 68°F | 55°F | 0" | -- |
Based on 55 years of data from NOAA station: NEWPORT BEACH HARBOR
Monthly Climate Averages
Historical temperature and precipitation averages for Newport Beach, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.